Valve mechanism



1. c. HORNUNG; VALVE MECHANISM, APPLICATION man qcrglo. ma.

Patented Jan. 13,1920.

of which t :omr q. Hormone, or'cmcaco, 'IL mois.

var-Va uncmmisu.

To all 'whom it may concern.-

-Be it known that 1, JOHN citizen' of the .United States, residingChicago, in the county of Cook and State of C. Hormone,-

lllinois, have invented a certain new', and useful Improvement in ValveMechamsm,-

e following is a full, clear, concise, and exact description. I

My invention relates to mechanism .employed for controlling the passageof fluid. A single mechanism constructed in accordance with thepreferred embodiment of my invention for one use thereof is adapted notonly toreduce the pressure of steam passing to a heating system from -'asultable steam source that may be common, though not necessarily so, toa number of such heat ing systems, but also regulates the temperaturefurnished by the heating system. In order that a single mechanism mayperform these two functions, I desirably construct, and arran e the sameso that it will-ma1ntain a uni orm pressure in the heating systemequipped with it until the temperature furnishe by the heating systemreaches a predetermined value, whereupon the Suppl of steam to theheating system is .chec e to be resumed when the temperature drops.

My invention has been advantageously embodied in valve-mechanism forreducin otherwise controlling ressure of fluid w ose passage is governedt ereby, but my invention is not to be thus limited. V

In carrying out my invention I subject a valve or other element thatcontrols the passage of fluid to the unbalancin effect of fluid when thepassage thereo is to be checked. This unbalancinf fluid is desirably ashunted portion 0 which is to have its flowcontrolled, an arunbalancingfluid at effective pressure. In the preferred arrangement theunbalancing fluid is made efl'ective by being admitted to by referenceto the accompanying drawing a control chamber in which is located theelement that is to be operated upon by. the

unbalancing fluid. In a automatlcally controlled by a thermostat whichis sub'ect to the temperature that is tobe regulate I will, explain myinvention morexfully showin mechanism of. my invention 1n longitu inalsection as embodied n a valve "structure, there beingjpar j p mem mmamn. Patented Jan. 13,1920. ippl'ioationi-flle doctober 10', 191a,,Serial No. mm. I

that are dia 'ammat1c,'Figu're 1 showing the preferre arrangement and I2 a modificationof the temperature 0011 1 Had valve of Fig. 1.

scribed as it is used in a heating system. It includesmanycharacteristics in common with the apparatus set forth in my Patent1,091,660 dated March 31, 1914 as being also used in a heating system.The fluid, heatof the drawing The apparatus illustrated will be .dey ingsteam, whose passage is to be controlled or whose pressure is to bereduced,- flows from a bo1ler or'other source through the nlet pipe 1and the valve mechanism of my invention, later to be fully 'described,to the outlet pipe 2 whichforms a part of the heating system to whichthe steam is to be supplied at reduced or predetermined pressure. Thepipes 1 and'2 are connected by the valve casingS. This casing inclosesand partially defines an inlet chamber 4 which initially receives the\steam, at unreduced pressure, from the inlet pipe 1. Equal orts 5 and 6are located in bpposite walls 0 said inlet chamber and leadito the.outlet and dontrolchamber 7 communicatin with the out let pipe 2.Operatively e ua valves 8 and 9 are respectively provide for said ports,valve 8 being within the outlet and control chamber 7 and valve 9,within the inlet chamher 4 whereb these valves'8 and 9 are substantiallyba anced. These .valves are located upon a common stem 10 passingthrough said ports and through the lower cylindrical portion 11 of thevalve chamber 7 into the upper portion 12 of the space inclosed by, thecontinuation or enlar" ment 13 of the casing 3 Said valve stem sconnected at 14 with the up er side of; he diaphragm 15 'that'is hel' 'yand wit in the casing 13. A spring; 16 has 'one' end in engagementwith'the underside of'the diaphragm. This'spring. is housed. by adeendmg tubular continuation 17, of the easmg 13. The spring is held.and made adpreferably by'the arran ment disc osed in my Patent-1,100,077of fine 16, 191 4.

Valve mechanism having the parts thus far specifically designated bnumerals of reference in connection wit the. accomparying drawin is setforth inmyaforesai patent. T ere is desirably added to this structure apartition 21 having acentral opening through which the .valve stemjustable to vary its degree of compression pressure of 'the steam withinthe outlet 1 passes and which is large enough to afiord' a chamber 7thatis below a. predetermined value say one pound. When such steampressure is exceeded it will overcome the "upward pressure of the springto depress the diaphragm and simultaneously close or partially close thebalanced valves 8 and' 9. Flow of steam from theinlet chamber 4 to theoutlet chamber 7 through the ports 5 and 6 is thereupon cut off orreduced until the pressure of steam within the outlet chamber issufiiciently lessened to be over-, come by the upward ressure of thespring 16 that thereupon lilts the diaphragm 15 and the valve stem 10simultaneously to open or further open the balanced valves 8 and 9,whereupon flow of steam from the inlet chamber 4 and pipe 1 to theoutlet chamber 7 and pipe 2 is resumed or in creased. In this way thepressureof steam or other fluid may be maintained at a constant valuein' the discharge or outlet pipe 2 so long as there is exceedin pressurewithin the inlet pipe 1, it being 1mmaterial whether or not suchexceeding pressure fluctuates.

Means are shown in my aforesaid atent for disturbing the balance betweent e u ward pressure of the spring 16 and t e downward pressure of theoutgoing steam in the outlet chamber 711 12, this means being operableby the temperature when reaching a predetermined maximum. The

Q the balanced valve.

i pressure of the opiposing spring, to cutoff the flow of steam letchamber. This prior arrangement requires the employment of a fluiddistinct from the incoming steam, a shuntedpart of which latter I employas thereby the presence of operative ressure isassured. The shuntedportion 0 steam flows, when it is to function, through the pipe. orIpassage 22 that is connected at one end'wit pipe 1 (of which thechamber 4: is virtuall a continuation) and at its other end wit thecontrol chamber 7 referably below the partition 21 which su cientlyrestricts the rom the inlettothe out w the inlet upward flow of theshunted steam to make this steam effective, in conjunction with thepressure of the outgoing steam in the said chamber, to depress spring 16to occasion a closing-action of the balancedvalves 8 and 9. The flow ofthe shuntedsteam is desir- "ably automatically controlled by tom eraturecontrolled means, but I do not esire my invention "to be thus limited.Thismeans ma be in the nature of a thermostat 23 locate ,in the placewhose temperature is to be controlled. l/Vhen the temperature reaches apredetermined maximum this thermostat will be operated to open the'electrically operated valve 24 located in the steam shunting pipe 22.Such valves are well known, and the one illustrated will not, therefore,be specifically described, and while I desirabl employ a simple electriccircuit between t e valve 24 and the locality whose temperature is to becontrolled, it is obvious that other means may be employed withoutdeparting from the s irit of'my in-'- vention. or example, in ig. 2 Ihave illustrated "a. well known neumatic thermostat '25 which controls te flow of valve actuating fluid in the pipe 26 which communicates withthe pneumatic. chamber 27 of pneumaticmechanism that is in operatingrelation. to the valve 24;

As illustrated, I dispense with fluid controlled mechanism at andextraneous to the temperature and pressure controlled valve mechanism,but I do not wish to be limited to this arrangement as I believe it tobe'new with me to employ in any. manner a portion of the incoming steamor fluid in regulating.

the passage of the fluid flowing to any localit I do notwish to belimited to the use of m invention in connection with the assage o fluidwhose inlet pressure exceeds its outlet pressure.

-While I have herein shown and particularly described the preferredembodiment of my invention I do not wish' to be-limited to the precisedetails of construction. shown as Y changes may readily be made withoutdeparting from the spirit of my invention, but

. aving thus described my invention I claim as new and desire to secureby Letters Patent the following:-, l.

1. The combination with communicating fluid conducting inlet and controlchambers having inlet and outlet'pipesres ectively communicatingtherewith; 'of a alanced valve structure governing the communicationbetween said chambers, an actuating element for imparting closingmovement to the balanced valve structure and operated 'b pressure offluid delivered to the control 0 amber, and temperature controlled meansfor effecting delivery of additional incoming fluid into thecontrolchamber independent of the inlet chamber and between the outlet pipe andthe actuating element of the valve structure.

2. The combination with communicating fluid conducting inlet and controlchambers having inlet and outlet pipes respectively communicatingtherewith; of a balanced valve structure governing the commimicationbetween sald chambers, ,a n actuating element for imparting closingmovement to the balanced valvestructure and 0 erated by pressure of thefluid delivered to t e con-- trol chamber, a supplemental inlet pipecommunicating directly with the control chamber between the outlet pipeand actuating element of the valve structure, and a temperaturecontrolled Valve for permitting and stopping the fiow' of fluid fromsaid supplemental inlet pipe into the control chamber.

3. The combination with communicating fluid conducting inlet and controlchambers having inlet and outlet pipes respectively communicatingtherewith; of a balanced valve structure governing the communicationbetween said chambers, an actuating element for imparting closingmovement to the balanced valve structure and operated b pressure offluid delivered to the control cl iamber, a fluid throttling devicedisposed within the-control chamber between the outlet pipe andtheactuating element, a supplemental inlet pi e communicating directlywitli the control chamber-between the throttling device and theactuating element of the valve structure, and a temperature controlledvalve for permitting and stopping the delivery of fluid to the controlchamber from said supplemental inlet pipe.

In witness whereof, I hereunto subscribe my name this28th day of Setember A D.

' JOHN o. HORNUNG.

